Collapsible and expensible trestle



March 1 6 1926. 1,576,583

* J. F. ENGLAND COLLAPSIBLE AND EXTENSIBLE TRESTLE Filed June 23, 1925 2 Sheets-Sheet 1 1 March 16 1926.

1,576,583 J. F. ENGLAND COLLAPSIBLE AND EXTENSIBLE TRESTLE Patented Mar. 16, 192

/ UNHTEEZZ? JAMES FREDRIGK ENG'ZAND, OF LEBANON, MISSOURI.

COLLAPSIBLE AND EXTENSIBLE TRESTLE.

Application filed June as, 1925. Serial Natalie.

Z '0 (ZZZ 1071 out it may concern Be it known that 1, JAMES F. ENGLAND, a citizen of United States, residing at Lebanon, in the county of Laclede and State of Missouri, have invented certain new and useful Improvements in Collapsible and Extensible Trestles, of which the following is a specification, reference being had therein to the accompanying drawing. 7

The present invention relates to trestles such as used by painters, paper hangers, and

others, and aims to provide a novel and improved trestle which is extensible to be adjusted to different sizes and which is also collapsible in order that it may be knocked down for compact storage or transportation.

A further objectof the invention is to provide a, trestle of the kind indicated comprising a novel construction and assemblage of the component elements, whereby the device, although simple in construction, is convenient and advantageous in use.

With the foregoing and other objects in view, which will be apparent as the description proceeds, the invention resides in the construction and arrangement of parts, as hereinafter described and claimed, it being understood that changes can be made within the scope of what is claimed, without departing from the spirit of the invention.

The invention is illustrated in the accompanying drai'vings, wherein Figure 1 is a side elevation of the trestle with the beam and legs'contracted.

Fig. 2 is a similar view showing the beam and legs extended.

Fig. 3 is a plan view of the trestle with the parts extended as seen in Fig. 2.

Fig. 4 is an end view ofthe trestle with the legs extended.

Fig. 5 is an enlarged cross section on the line 55 of Fig. 1. v

An extensible beam is provided composed of intern'iediate and end sections that are conveniently made from structural iron or steel. Thus, the intermediate section comprises a T-iron having the upper flanges 11 and the depending flange or web 12. The end sections 13 of the beam are composed of angle irons having the upper flanges '14 and the depending flanges 15. Each end section comprises a pair of angle irons, and the inner end portions of the angle irons overlap thesectio'n 10 at the opposite sides thereof, with the flanges 15 overlapping and bearing slidably against the flange 12 and the flanges flanges 15 near the inner ends of the end sectlons 13, and have rollers 17 thereon working in longitudinal slots 18. with which the flange 12 is provided, thereby slidably connecting the sections of the beam. Spacers 19 are secured between the outer end'portions of the angle irons of the end sections, to space said angle irons apart, and the ends of the flange 12 are cut away below the end portions of the flanges 11 in order that the end sections may be moved completely under the intermediate section, the spacers 19 being movable under the flanges 11, as seen in Fig. 1.

Two pairs of legs 20 are provided, one pair at each end of the beam, and the legs are also extensible in order to adjust the height of the beam. Each leg is composed of the upper and lower tubular sections 21 and 22, respectively, which telescope together, the section 22 fitting slid-ably within the section 21. The upper terminals 23 of the sections 21 are flattened to bear against the op posite sides of the flanges 15, and the flanges -14 have slots 24 to receive the upper extreme ities of the sections 21. Pins 25 extend transversely through the flanges and spacers 19 and the upper end portions of the legs are apertured to engage over said pins. In assembling the parts, the upper end portions of the legs are engaged over the pins 25 with the legs swung longitudinally at acute angles to the beam, and then when the legs are swung to position, their upperends move into the slots 24, thereby holding the legs on the pins 25. The lower sections 22 of the legs have apertures 26 for the engagement of pins 27 that are inserted through the sec tions 21, in order to maintain the legs ad justed for diiferent heights.

A cross bar orbrace 28 is provided hetweeneach pair of legs, being formed at the ends thereof with loops or eyes 29 loosely embracing the sections 22 and abutting the lower ends of the sections 21. Said cross bars or braces, thus prevent the legs from spreading apart. Chains or flexible elements 30 connect'thepins 27 and cross bars 28, to

prevent said pins being lost or mislaid.

Inclined braces 31, which are preferably.

of tubular stock, have flattened upper terminals overlapping the inner end portions of the flanges at opposite sides and engaging the bolts. 16, which have wing-nuts 33 to'clamp said braces to the endsections of the beam. The lower end portions 3-1 of the braces 31 are flattened and bent downwardly to extend across the cross bars 28, and said portions 3 1 have lugs 35 to engage under said cross bars. Bolts 36 engage through the portions 3 1 and cross bars 28 to clamp the braces 31 to said cross bars, and said bolts have tail nuts 37 that can be conveniently rotated by hand. The braces 31 preventlongitudinal displacement of the legs relatively to the beam, and render the structure more rigid.

By loosening the nuts 33 of the bolts 16, the beanr is readily adjusted to lengthen and shorten the trestle, and by ren'ioving the pins 27, the legs are readily adjusted to regulate the height of the trestle. The parts may also be readily separated for collapsing or knocking down the trestle. Thus, the bolts 16 and 36 may be readily removed, so that the parts'may be separated quickly and conveniently. "he legs 20 and braces 31 are therefore readily detached from the beam, and thebraces 31 are readily detached fromthe cross bars 28. Said cross bars are also readily removed fromthe legs, so that the parts may be placed together Within small space. v

The flanges 12 and 15 have apertures 38 adapted to register when the beam is fully extended, so as to receive pins, bolts or other elements, which will prevent the beam from being adjusted accidentally.

It is also possible to detach the legsQO and braces 31 from the beam'lO and to attach said legs and braces to a wocden bar or beam when an adjustable beam is notwanted.

Having thus described the invention, what is claimed'as new is 1. A- trestle comprising a beam composed ot intermediate and end'sections, said intermediate section constituting a T-iron with upper and depending flanges, each end section constitutingv a" pair of members overlapping the opposite sides ot the depending flange of said T-iron, saiddepending flange having longitudinal slots, clampingelements engaging through said pairs of members near their inner ends and working in said slots, the outer end portions of said pairs of members being secured together, said upper flanges of said. T-iron overlapping andbearing on said members, and legs secured to saidend sections near the outer ends thereof.

2. Atrestle'coniprising abeam composed of intermediate anden'd sections, each having upperand depending flanges, with the depending flanges overlapping, the dependingflange of the intermediate section having longitudinal slots, the upper flanges oi? the intermediate section overlapping the upper flanges of theendisections and bearin thereon, clamping elements carried by the de 'iending flanges oi the end sections near the inner ends thereof and working in said slots, and'legs engaged with said depending flanges of the end sections near the opposite ends of said end sections, the upper flanges of said end sections having slots receiving the upper ends of said legs.

3. A trestle comprising a beam composed of intermediate andend sections, said intermediate section constituting a T-iron with upper and depending flanges, said end sections each constituting a pair of angle irons having upper and depending flanges over-- lapping the T-iron at opposite sides thereof, the depending flange of the T-iron having slots, clamping elements engaging through the depending flanges ot the angle irons and working in said slots, a pair of legs secured to each end section, and braces connected to the legs and engagingv saidclamping elements.

1. A trestle comprising a beam having depending and upper flanges, pairs ol legs, the upper end portions of said legs and depending flanges having portions to cng one another, the upper flanges having slots to receive the upper ends of said legs, and means for connecting the legs of each pair with one another and with the beam for ln'a'cing the legs and beam relatively to one another.

A trestle comprising a beam, pairs of legs having upper tubular sections secured to said beam and lower sections slidable in said upper sections, a'cross bar for each pair of legs having loops at its ends loosely embracingthe lower leg sections and abutting the lower ends of the upper leg sections, and inclined braces having their upper ends secured to said beam and having their lower end portions secured to said bars lit-tween the legs.

6. A trestle comprising an extensible beam having intermediate and end Sections, the intermediate section having slots, clamping elements carried by the end sections and working in said slots, a pair of legs tor each end section having upper sections secured to said end section and lower sections slidable ins-aid upper sections. a cross bar for each pair ot legs having loops at its ends loosely embracing the lower leg sect on and abutting the lower ends ot' the upper leg sections, and inclined. braces having their lower ends secured to said cross bars between the legs and having their upper ends engaging said clam iing elements.

In testin'iony whereof l'hei'eunto' aliix my signature;

JAMES FREDRICK ENGLAND.

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